Support apparatus for guide pin

Abstract

A support apparatus for a guide pin contains: an accommodation tube, an upright post, a connection shaft, a holder, two side plates, a guiding trench, a roller, a guide pin, and a driving mechanism. The accommodation tube includes a fork, a through groove, and an elongated slot. The upright post includes two first coupling segments, and the connection shaft passes through the fork and is located on the accommodation tube. The holder includes two parallel joining extensions, and the two side plates are separated from each other. The guiding trench passes through the holder, and the roller is accommodated between the two side plates and is rotatably fitted with the connection shaft, and a part of the guide pin inserts into the guiding trench. The driving mechanism is accommodated in the elongated slot and is in connection with the two first coupling segments and the two joining extensions.

What is claimed is: 
     
       1. A support apparatus for a guide pin comprising:
 an accommodation tube including a fork extending outwardly from a bottom thereof, a through groove formed in a central position thereof and communicating with the fork, and an elongated slot defined in the through groove and communicating with the fork; 
 an upright post including two first coupling segments extending outwardly from a bottom thereof and moving in the accommodation tube; 
 a connection shaft passing through the fork and located on a first peripheral side of the accommodation tube opposite to a second peripheral side of the accommodation tube on which the elongated slot is defined; 
 a holder including two parallel joining extensions extending outwardly from a top thereof; 
 two side plates separated from each other and accommodating the connection shaft, such that the holder moves longitudinally and horizontally along the connection shaft relative to the accommodation tube; 
 a guiding trench passing through two sides of the holder; 
 a roller accommodated between the two side plates and rotatably fitted with the connection shaft; 
 a guide pin, a part of which inserts into the guiding trench of the holder; and 
 a driving mechanism accommodated and moving in the elongated slot, wherein the driving mechanism is in connection with the two first coupling segments of the upright post and with the two joining extensions of the holder so as to drive the holder to move longitudinally and horizontally relative to the accommodation tube by way of the upright post. 
 
     
     
       2. The support apparatus for the guide pin as claimed in  claim 1 , wherein the accommodation tube is mounted on a lifting mechanism, and the lifting mechanism includes a housing portion configured to house a metal wire via the guide pin from the roller. 
     
     
       3. The support apparatus for the guide pin as claimed in  claim 1 , wherein the guide pin is fixed in the guiding trench by a locking element which screws with the holder. 
     
     
       4. The support apparatus for the guide pin as claimed in  claim 3 , wherein the locking element is a screw bolt or a countersunk screw. 
     
     
       5. The support apparatus for the guide pin as claimed in  claim 1 , wherein the driving mechanism is a bent piece and its thickness is less than a distance of the elongated slot, and the driving mechanism includes two second coupling segments, wherein each second coupling segment is in a ring shape and accommodates said each bolt.